ferrea Valves with ported heads , will compression go up?
03-02-2006, 07:35 PM
#1
ferrea Valves with ported heads , will compression go up? Hi
I have a set of Absolute speed heads
They are 241 castings and flow around 290 CFM at 550-600 lift
they only have stock 2001-2002 2.00-1.55 valves in them
and they are stock compression.
If i was to install a set of bigger ferrea 2.02-1.57 valves will the bigger valves raise the compresion
Please let me know,
thank you for your help
I have a set of Absolute speed heads
They are 241 castings and flow around 290 CFM at 550-600 lift
they only have stock 2001-2002 2.00-1.55 valves in them
and they are stock compression.
If i was to install a set of bigger ferrea 2.02-1.57 valves will the bigger valves raise the compresion
Please let me know,
thank you for your help
Trending Topics
03-02-2006, 08:13 PM
#14
Bigger valves could raise the compression a small amount if they sit higher on the seat, thereby lowering the combustion chamber cc's. Your friend's Manley's most likely did not lead to his blow motor, though, and I doubt it raised his CR more than a .25 - .5 points max.
Jim
Jim
03-02-2006, 08:20 PM
#15
On The Tree
Join Date: Sep 2004
Posts: 134
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by DeltaT
Bigger valves could raise the compression a small amount if they sit higher on the seat, thereby lowering the combustion chamber cc's. Your friend's Manley's most likely did not lead to his blow motor, though, and I doubt it raised his CR more than a .25 - .5 points max.
Jim
Jim
you mean .025 and .050 which is like going 11.1 to 11.025.1 which does nothing at all
